Emergent algebras [1]} [2]} are a distillation of differential calculus in metric spaces with dilations [3]}. This class of metric spaces contain the "classical" riemannian manifolds, as well as fractal like spaces as Carnot groups or, more general, sub-riemannian or Carnot-Carathéodory spaces, Bellaïche [4]}, Gromov [5]}, endowed with an intrinsic differential calculus based on some variant of the Pansu derivative [6]}.
